Did you know that most toilets flush in the key of E-flat? Or that American Airlines once saved $40,000 in its operating budget by removing a single olive from each salad served in first class? The former compiler of the "In Fact" column for Britain's Prospect magazine, Tom Nuttall (and what a great name!) presents this clever, fun, and occasionally shocking compendium of facts from around the world. For instance, the most expensive age of your life is apt to be 34. Thomas Jefferson invented the swivel chair. In World War II, every Italian soldier in North Africa was issued his own espresso machine. There are an estimated ten quadrillion (that's 13 zeros) ants on earth, with a combined weight equivalent to the entire human population. And speaking of numbers, the first written one to have the letter "a" in it, from zero, is one thousand.